Ventilation of Square Cavity Containing a Heat Source

Abstract:

A numerical simulation of turbulent mixed convection of a ventilated cavity containing a heat source placed of the center has been carried out. This cavity is outfitted along couple holes: one placed within the lower left corner and the other in the top right corner. The width of the hole "H" represents is 1/5 of the length of the cavity side. The diameter regarding the round heat source "D" is equal in accordance with the breadth of the inlet gap’s H (D = H). The walls of the cavity considered are maintained adiabatic, while the temperature of the heat source T is higher than the ambient temperature. The turbulence model k-ε was used for governing equations of turbulent mixed convection inside the cavity. The finite volume method was used for numerical resolution. The parameters of flow are: the Grashof number is set to Gr = 10⁹ and the Reynolds number (Re) varies so that the number of Richardson (Ri) takes the values Ri = 0.01, 0.05, 0.1, 1, 2, 5, 10, 20 and 30 (Ri = Gr/ Re²). The effect of thermo-dynamic parameters and the shape geometric cavity effect are investigated.

• Periodical: Defect and Diffusion Forum (Volume 406)
• Pages: 149-163
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.406.149
• Online since: January 2021
• Authors: Djelloul Chati*, Said Bouabdallah, Badia Ghernaout
• Keywords: Cavity Shape, Finite Volume Methods, Heat Source, Turbulent Mixed Convection, Ventilation

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